Oskar baruch



(No Model.)

I BARUGH.

SURGICAL CHAIR.

No. 516,908. Patented Mar. 20, 1894.

w/m E8853,

ATTORNEYS we NA'HCINAL umoemmma ODMFANV.

wnsumawn, 04 c4 UNITE I STATES PATENT OFFICE.

OSKAR BARUOH, OF BERLIN, GERMANY.

SU RG-lCAL CHAIR.

SPECIFICATION forming part of Letters Patent No. 516,908, dated March 20, 1894. I Application filed September 28, 1893. Serial No. 486,750. (No model.)

To all whom it may concern Be it known that I, ()SKAR BARUCH, a subject of the King of Prussia, and a resident of Berlin, in the Kingdom of Prussia and Empire of Germany, have invented a new and useful Chair for Surgical Purposes, of which the following is a full, clear, and exact specification.

Myinvention relates to a chair for surgical purposes, the various parts of which are made adjustable in order that the patient may be placed in any position that may berequired for the surgical operation.

The invention consists of certain features of construction and combinations of the same, as will be fully disclosed hereinafter and pointed out in the claims.

I will now proceed to specifically describe my invention with reference to the accompanying drawings, in which- Figure 1 is an end elevation of a surgical chair embodying my invention, the seat and the back being removed; and Fig. 2 is a side elevation of the same in another position, the

' position represented in Fig. 1, being indicated in dotted lines.

Like letters refer to corresponding parts in both views.

My improved surgical chairconsists of a frame a, formed of two similar lateral sections which are connected by means of braces j, and a cross bar I). On this cross bar is pivotally mounted a lever 0, connected, by means of one or a couple of links 01, with a cross bar it which is supported by the said links. The link at shown at the right in Fig. 1 is pivotally connected with an arm 0', that has a similar connection with the cross bar b. Levers e, are pivoted to the upper cross bars j, and connected at their lower extremities with the cross bar h. In the upper ends of the'frame or standards a is journaled a roller a. A seat f, is pivoted to the cross bar h and with the seat is connected the lower end of the back g made of a suitable flexible'material, such as'waxedcloth or oil-cloth. The upper part of the back 9 passes over the roller '0' and is secured to a cross bar 10 connecting the upper ends of the levers e. I also provide a device for looking the lover a, and the parts connected therewith in various positions; this device preferably consists of a ratchet wheel is rigidly connected with the lever c and a pawl Z pivoted to the frame a. Stops m and n may be secured to the frame a, in the path of travel of be employed for securing a foot-rest at the lower end of the said levers e.

The operation of the device will be obvious.

After the lever c-has been swung up to bring the seat f into its lowest position (as indicated in dotted lines in Fig. 2), the patient sits down on the chair in a reclining position, the feet being supported on the detachable foot-rest, and by turning the lever c the seat is raised into the required position, the pawl Zholding the parts stationary when the lever is released.

What I claim, and desire to secure by Letters Patent, is

1. In a chair or like article, the combination, with the frame and a seat having an articuof an ascending and descending movement, of a back supported on the upper part of the frame and constructed to slide longitudinally on its support, said back being secured at one end to the seat so as to be capable of assuming various angular positions in relation thereto, and a connection between the other end of the back and that part of the seat where the same is connected to the frame, whereby the seat and the back are caused to move in unison, substantially as described.

2. In a chair or like article, the combination, with the frame and a seat having anarticulated connection therewith so as to be capable of an ascending and descending movement, of a flexible back having a'slidin'g connection with the frame and secured at one end to the seat so as to be capable of assuming various angularpositions in relation thereto, levers pivoted to the frame and connected at one end with the upper end of the back, and extending beyond their pivots toward the seat, and a connecting device between the seat and theforward extensions of said levers, whereby the seat and the back are caused to move" in unison, substantially as described.

3. In a chair or like article, the combination,

lated connection therewith so as to be capable I with the frame and the pivoted seat having an articulated connection therewith, so as to be capable of an ascending and descending movement, of a back, made of a flexible material and having a sliding connection with the frame, the lower end of the back being secured to the seat so that the back is capable of assuming various angular positions in relation to the seat, rigid levers pivoted to the frame and connected at one end with the upper end of the back and extending beyond their pivots toward the seat, a connection between the front members of the levers and the seat, whereby the latter and the back are caused to move in unison, andmeans for conjointly adjusting the back and the seat, substantially as described.

4:. In a surgical chair, the combination, with the frame carrying a roller at its upper end, the adjusting lever having a pivotal connection therewith, links pivotally connected with the adjusting lever, and the pivoted seat supported by the said links, of a flexible back secured to the seat by one end and carried over the roller at the upper end of the frame, levers pivoted to the frame and connected with the upper end of the back on one side of their fulcrum, a connection between the seat and the said levers on the opposite side of their fulcrum, whereby when the seat is carried upward the upper end of the back will be drawn downward, and vice versa, and means for locking the movable parts in position, substantially as described.

5. In a surgical chair, the combination, with the frame carrying a roller at its upper end, the adjusting lever having a pivotal connection therewith, a ratchet wheel rigidly connected with the said lever, a pawl pivoted to the frame and adapted to engage the ratchet wheel, links pivotally connected with the adjusting lever, and the pivoted seat supported by the said links, of a flexible back secured to the seat by one end and carried over the roller at the upper end of the frame, and levers pivoted to the frame and connected with the upperend of the back on one side of their fulcrum, a connection between the seat and the saidlevers on the opposite side of their fulcrum, whereby when the seat is carried upward the upper end of the back willbe drawn downward, and vice versa, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

OSKAR BARUCH.

Witnesses:

PAUL FISCHER, JOHN SALOWSKI. 

